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Move window function handling out of StftHelper

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And apply the window function only once at the end of the process
function for the plugins that used it.
This commit is contained in:
Robbert van der Helm
2022-04-28 17:20:39 +02:00
parent dd770b6bde
commit e35886c216
4 changed files with 23 additions and 31 deletions
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16
plugins/puberty_simulator/src/lib.rs
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@@ -205,7 +205,8 @@ impl Plugin for PubertySimulator {
let window_size = self.window_size();
let overlap_times = self.overlap_times();
let sample_rate = context.transport().sample_rate;
let gain_compensation: f32 = 1.0 / (overlap_times as f32).log2() / window_size as f32;
let gain_compensation: f32 =
(overlap_times as f32 / 2.0).sqrt().recip() / window_size as f32;
// If the window size has changed since the last process call, reset the buffers and chance
// our latency. All of these buffers already have enough capacity
@@ -221,11 +222,8 @@ impl Plugin for PubertySimulator {
[self.params.window_size_order.value as usize - MIN_WINDOW_ORDER];
let mut smoothed_pitch_value = 0.0;
self.stft.process_overlap_add(
buffer,
&self.window_function,
overlap_times,
|channel_idx, real_fft_buffer| {
self.stft
.process_overlap_add(buffer, overlap_times, |channel_idx, real_fft_buffer| {
// This loop runs whenever there's a block ready, so we can't easily do any post- or
// pre-processing without muddying up the interface. But if this is channel 0, then
// we're dealing with a new block. We'll use this for our parameter smoothing.
@@ -298,8 +296,10 @@ impl Plugin for PubertySimulator {
.c2r_plan
.process_with_scratch(&mut self.complex_fft_buffer, real_fft_buffer, &mut [])
.unwrap();
},
);
// Apply the window function. We can do this either before the DFT or after the IDFT
util::window::multiply_with_window(real_fft_buffer, &self.window_function);
});
ProcessStatus::Normal
}